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SubjectRe: [PATCHv2 1/3] perf report: Display s390 diagnostic counter sets
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On 01/21/2019 02:13 PM, Jiri Olsa wrote:
> On Sun, Jan 20, 2019 at 07:18:14PM +0100, Jiri Olsa wrote:
>> On Thu, Jan 17, 2019 at 11:00:53AM -0300, Arnaldo Carvalho de Melo wrote:
>>
>> SNIP
>>
>>> --- a/tools/perf/util/python-ext-sources
>>> +++ b/tools/perf/util/python-ext-sources
>>> @@ -25,6 +25,7 @@ util/parse-branch-options.c
>>> util/rblist.c
>>> util/counts.c
>>> util/print_binary.c
>>> +util/s390-sample-raw.c
>>> util/strlist.c
>>> util/trace-event.c
>>> ../lib/rbtree.c
>>
>> hi,
>> this change breaks the python module:
>>
>> >>> import perf
>> Traceback (most recent call last):
>> File "<stdin>", line 1, in <module>
>> ImportError: ./perf.so: undefined symbol: color_fprintf
>>
>> changelog doesn't say anything about python related change
>
> I made some chenages and movedthat raw sample code
> under s390.. which cured the python module, but
> I haven't tested it on s390.
>
> Could you please check if code in here works for you:
> git://git.kernel.org/pub/scm/linux/kernel/git/jolsa/perf.git
> perf/s390
>
> if it works, I'll post it
>
> thanks,
> jirka
>

I downloaded your repository and checked out branch perf/s390.
It works nicely, you have my tested by:
-
Tested-by: Thomas Richter <tmricht@linux.ibm.com>

PS: This looks very similar to my version 1 submitted around Jan 11th.
Arnaldo wanted a rework to be able to get these counter values on
non-s390 platforms, that why we came up with version 2(which unfortunately
broke the perf.so python module).

PS2: This was my first encounter to python and I played around a bit
to include the necessary modules to get rid of the undefined warning.
However this ended up in a larger list of C files to include and
stopped at modules
1. util/pmu.c which refers to symbol perf_buf_in which is a FILE pointer
used by some yacc input file.
2. perf_config_bool() which is located in util/config.c and emits a
compile error when included in the util/python-ext-sources file
for python/perf.so module.

So I think this road is a dead end.

Thanks for fixing this.

--
Thomas Richter, Dept 3303, IBM s390 Linux Development, Boeblingen, Germany
--
Vorsitzende des Aufsichtsrats: Martina Koederitz
Geschäftsführung: Dirk Wittkopp
Sitz der Gesellschaft: Böblingen / Registergericht: Amtsgericht Stuttgart, HRB 243294

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